337 record highs were broken or tied in the West yesterday. (NOAA)

Via Jeff Masters: (emphasis added in bold)

An unprecedented April heat wave brought a second day of sizzling temperatures to the Western U.S. yesterday, where temperatures ranging 20 - 30 degrees above normal have toppled numerous all-time April heat records. Nearly every weather station in the Inter-mountain West 756 has broken, tied, or come within 1- 2 °F of their all-time record April heat record since Sunday. Most notably, the 113°F measured at Furnace Creek in Death Valley, California on Sunday, April 22 was tied for the hottest April temperature ever recorded in the U.S.

The atmospheric see-saw sloshing unseasonably warm and cold conditions back and forth between the coasts is not at all unusual. This reflects normal behavior in the jet stream.

But note the warm weather in recent times invariably soars to greater heights than the cold weather.

Even with the bout of chilly weather in the East, including snow in the mountains, relatively few records have been set. Meanwhile, hundreds of record highs have been set in the West.

On Sunday and Monday, 756 warm temperature records were set in the U.S. compared to just 133 cold temperature records.

If we go back to March, an astounding 15,292 warm temperature records were set in the U.S. compared to just 890 cold temperature records.

The point: lately, record weather in the U.S. is not even close to equal when opposite. The balance is heavily weighted towards the warm...

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